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Every trail tells a different story. Polygon builds mountain bikes for every ride, from cross-country speed to technical descents, with hardtail and full-suspension MTBs designed to perform.

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From skateparks and pump tracks to dirt jumps and street sessions, Polygon Dirt Jump & BMX bikes are built for confidence, control, and creativity.

ROAD

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Engineered with advanced frame technology, Polygon road bikes are designed to perform. Explore performance to all-rounder road bikes that deliver speed, efficiency, and precision on every ride.

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Built for riders who refuse to be limited by the route, Polygon Adventure Bikes deliver comfort and versatility. Explore gravel bikes and hybrid bikes ready for urban rides and scenic escapes.

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From daily commutes to weekend rides, Polygon city bikes deliver comfort, versatility, and reliable performance for every urban journey.

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Go farther with Polygon electric bikes. From daily commuting to weekend adventures, our e-bikes deliver smooth power, confident handling, and more freedom on every ride.

JUNIOR

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Every ride starts with confidence. Polygon kids junior bikes are built for young riders, combining comfort, durability, and confidence to inspire every adventure from the very first ride.

SISKIU T: Trail-Ready Performance

Trail | 140mm/ 135mm Travel | ALX Alloy | 29" Wheels

The Polygon SISKIU T-Series is the definitive modern trail bike and the number one choice for riders looking for high-end performance without the big price tag. Built around a stiff, responsive alloy frame, 29er wheels and a proven 1x drivetrain, the SISKIU T balances technical climbing efficiency with aggressive descending stability.

Bike type:

SISKIU T8

$2,199.00

Color

Size

27.5” SMALL
27.5” MEDIUM
29” MEDIUM
29” LARGE
29” XTRA LARGE

Clear

Find my size

FIND DEALER

SKU : 502634

Features

Updated geometry

Updated from the previous version, the 64.5° head angle provides stability on steep descents, and the 77° seat tube angle puts you in an efficient, upright pedalling position. 430mm chainstays keep corning snappy, whilst a 39mm bb drop, shorter seat seat tubes and low standover improves handling.

UDH compatible

With UDH dropout standard, the SISKIU T is now compatible with all modern shifting systems available on the market.

Internal cable routing

Cables are now routed internally for an extra clean look, protecting them from the worst of the weather.

Top tube accessory mount

Compatible with aftermarket accessories, the top tube mounts make it possible to carry all your spares necessary trailside repair - no backpack needed.

Specification

*Specifications, colors, and product availability are subject to change without prior notice.

Frameset

Frameset

ALX TRAIL FRAME 140MM TRAVEL (27.5”) / 135MM TRAVEL (29”), TAPER H/T

Fork

FOX 34 RHYTHM 150mm (27.5") / 140mm (29") TRAVEL

Rear Shock

FOX FLOAT DPS SPECIAL TUNING E2E:210X55MM, HARDWARE:8MMX25MM

Frame Color

RADIANT PURPLE - BLACK

Decal Color

AURORA REFLECTIVE - BLACK
Drivetrain

Shifter

SHIMANO SLX SL-M7100-R, 1x12-SPEED TRIGGER

Crank

SHIMANO MT-510-1 BOOST 32T

Cassette

12 SPEED 11-51T

Rear Derailleur

SHIMANO SLX RD-M7100-SGS DIRECT ATTACH

BB

SHIMANO 2-PIECE CRANKSET BSA THREADED

Chain

KMC X12 12SPEED

Pedal

ALLOY FLAT PEDAL W / REPLACEABLE PIN & REFLECTOR
Cockpit

Saddle

ENTITY XTENT

Seatpost

DROPPER POST TRANZ-X 150MM (S-M) 170 (L-XL) TRAVEL, ZERO OFFSET, 30.9MM

Handlebar

ENTITY XPERT, ALLOY W:780MM R:20MM BB:35MM

Handlestem

ENTITY XPERT ALLOY, EXT: 35mm, BB: 35mm, R/D: 7 Degree

Headset

ZERO STACK (ZS) SEALED BEARING FOR TAPER HEAD TUBE, ZS 44/28.6 | ZS 56/40
Wheel & Tire

Wheel Set

ENTITY XL2 DISC 584-35 (27.5”) / 622-35 (29”)

Wheel Size

27.5" / 29"

Tire

PERFORMANCE TIRE, 27.5"X2.60"/29”X2.60"

Rim

584 / 622-35 32H FOR TYRE 584 / 622-54/76 TUBELESS READY
Brake

Brake Lever

TEKTRO LEVER

Brake Caliper

TEKTRO HD-M745 4-PISTONS HYDRAULIC DISC BRAKES

Rotor

SHIMANO SM-RT54 180mm CENTER-LOCK

Geometry & Size

A brief explanation of geometry is placed here. The geometry image below will stay / freeze.

mm inch

Find your size Download Frame Kit

	S (27.5″)	M (27.5″)	M (29″)	L (29″)	XL (29″)
Height (cmfeet)	155-165 5'1"-5'5"	165-175 5'5"-5'9"	165-175 5'5"-5'9"	175-185 5'9"-6'1"	185-195 6'1"-6'5"
Seat Tube Length (A)	385 15.16	400 15.75	400 15.75	415 16.34	430 16.93
Seat Tube Angle (B)	71 2.8	71 2.8	70.5 2.78	70.5 2.78	70.5 2.78
Effective Seat Tube Angle (C)	76.5 3.01	76.5 3.01	76.5 3.01	76.5 3.01	76.5 3.01
Head Tube Length (D)	105 4.13	120 4.72	90 3.54	105 4.13	120 4.72
Head Tube Angle (E)	65 2.56	65 2.56	65.5 2.58	65.5 2.58	65.5 2.58
Effective Top Tube (F)	582.5 22.93	605.7 23.85	605.9 23.85	629.1 24.77	652.4 25.69
Bb Height (G)	335 13.19	335 13.19	335 13.19	335 13.19	335 13.19
Bb Offset (H)	20 0.79	20 0.79	39 1.54	39 1.54	39 1.54
Chainstay Length (I)	425 16.73	425 16.73	430 16.93	430 16.93	430 16.93
Wheelbase (J)	1172.8 46.17	1199.1 47.21	1193.5 46.99	1219.7 48.02	1245.9 49.05
Frame Reach (K)	440 17.32	460 18.11	460 18.11	480 18.9	500 19.69
Frame Stack (L)	593.5 23.37	607.1 23.9	607.6 23.92	621.2 24.46	634.9 25
Standover Height (M)	666.6 26.24	672.5 26.48	676.6 26.64	686.2 27.02	695.9 27.4

FAQ

What is the sprocket size of the bike?

It come with 11-51T sprocket.
Can I add more travel to the fork?

Adding more will put the frame on a stress so we don't recommend it
What is the drivetrain model of the bike?

The bike is equipped with Shimano SLX series drivetrain
What is Trail Bike

A riding machine designed for steepy mountainous trail
Where can I ride Trail Bike

You can find it amusing on mountainous terrain with single dirt/ rocky trail with technical tracks
How long the travel on Trail Bike

To absorb shocks, it's equipped with 140mm travel fork and rear suspension shock for the best experience
Can I use Trail Bike for a drop jump

Yes you can for a recommended height up to 1 meter

SISKIU T: Trail-Ready Performance

SISKIU T8

Specification

Geometry & Size

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FAQ